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Date: Thu, 17 Feb 2022 22:58:32 +0800
From: kernel test robot <oliver.sang@...el.com>
To: "Jason A. Donenfeld" <Jason@...c4.com>
Cc: lkp@...ts.01.org, lkp@...el.com,
LKML <linux-kernel@...r.kernel.org>
Subject: [random] 118386b2ed: BUG:spinlock_bad_magic_on_CPU
Greeting,
FYI, we noticed the following commit (built with gcc-9):
commit: 118386b2ed0e47e303905ced2379bf2c98cde203 ("random: use simpler fast key erasure flow on per-cpu keys")
https://github.com/ammarfaizi2/linux-block crng/random/jd/slow-load
in testcase: boot
on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+--------------------------------------------------------------------+------------+------------+
| | 086a701cf5 | 118386b2ed |
+--------------------------------------------------------------------+------------+------------+
| BUG:spinlock_bad_magic_on_CPU | 0 | 10 |
+--------------------------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>
[ 0.000000][ T0] BUG: spinlock bad magic on CPU#0, swapper/0
[ 0.000000][ T0] lock: base_crng+0x28/0x4c, .magic: 00000000, .owner: swapper/0, .owner_cpu: 0
[ 0.000000][ T0] CPU: 0 PID: 0 Comm: swapper Not tainted 5.17.0-rc3-00015-g118386b2ed0e #1
[ 0.000000][ T0] Call Trace:
[ 0.000000][ T0] dump_stack_lvl (lib/dump_stack.c:107)
[ 0.000000][ T0] dump_stack (lib/dump_stack.c:114)
[ 0.000000][ T0] spin_dump.cold (kernel/locking/spinlock_debug.c:70 (discriminator 12))
[ 0.000000][ T0] do_raw_spin_unlock (kernel/locking/spinlock_debug.c:77 kernel/locking/spinlock_debug.c:99 kernel/locking/spinlock_debug.c:140)
[ 0.000000][ T0] _raw_spin_unlock_irqrestore (include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 0.000000][ T0] add_device_randomness (drivers/char/random.c:508 drivers/char/random.c:728)
[ 0.000000][ T0] ? dmi_format_ids+0xfd/0xfd
[ 0.000000][ T0] dmi_walk_early (drivers/firmware/dmi_scan.c:151)
[ 0.000000][ T0] dmi_present (drivers/firmware/dmi_scan.c:605)
[ 0.000000][ T0] dmi_setup (drivers/firmware/dmi_scan.c:730 drivers/firmware/dmi_scan.c:816)
[ 0.000000][ T0] setup_arch (arch/x86/kernel/setup.c:673 arch/x86/kernel/setup.c:950)
[ 0.000000][ T0] ? vprintk (kernel/printk/printk_safe.c:50)
[ 0.000000][ T0] start_kernel (init/main.c:275 (discriminator 3) init/main.c:473 (discriminator 3) init/main.c:951 (discriminator 3))
[ 0.000000][ T0] ? set_intr_gate (arch/x86/kernel/idt.c:199)
[ 0.000000][ T0] ? early_idt_handler_common (arch/x86/kernel/head_32.S:417)
[ 0.000000][ T0] i386_start_kernel (arch/x86/kernel/head32.c:57)
[ 0.000000][ T0] startup_32_smp (arch/x86/kernel/head_32.S:328)
[ 0.000000][ T0] SMBIOS 2.8 present.
[ 0.000000][ T0] DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 0.000000][ T0] Hypervisor detected: KVM
[ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00
[ 0.000004][ T0] kvm-clock: using sched offset of 2724083838 cycles
[ 0.000596][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.002279][ T0] tsc: Detected 2394.374 MHz processor
[ 0.003988][ T0] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[ 0.004698][ T0] e820: remove [mem 0x000a0000-0x000fffff] usable
[ 0.005268][ T0] last_pfn = 0x140000 max_arch_pfn = 0x1000000
[ 0.005882][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.006627][ T0] Scan for SMP in [mem 0x00000000-0x000003ff]
[ 0.007228][ T0] Scan for SMP in [mem 0x0009fc00-0x0009ffff]
[ 0.007855][ T0] Scan for SMP in [mem 0x000f0000-0x000fffff]
[ 0.012852][ T0] found SMP MP-table at [mem 0x000f5a80-0x000f5a8f]
[ 0.013485][ T0] mpc: f5a90-f5b74
[ 0.013857][ T0] initial memory mapped: [mem 0x00000000-0x0e7fffff]
[ 0.014556][ T0] RAMDISK: [mem 0x6067e000-0x7fffffff]
[ 0.015061][ T0] Allocated new RAMDISK: [mem 0x16e7c000-0x367fdd2c]
[ 0.320327][ T0] Move RAMDISK from [mem 0x6067e000-0x7ffffd2c] to [mem 0x16e7c000-0x367fdd2c]
[ 0.321272][ T0] ACPI: Early table checksum verification disabled
[ 0.321868][ T0] ACPI: RSDP 0x00000000000F5850 000014 (v00 BOCHS )
[ 0.322492][ T0] ACPI: RSDT 0x00000000BFFE15C9 000030 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001)
[ 0.323390][ T0] ACPI: FACP 0x00000000BFFE149D 000074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001)
[ 0.324325][ T0] ACPI: DSDT 0x00000000BFFE0040 00145D (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001)
[ 0.325236][ T0] ACPI: FACS 0x00000000BFFE0000 000040
[ 0.325751][ T0] ACPI: APIC 0x00000000BFFE1511 000080 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001)
[ 0.326634][ T0] ACPI: HPET 0x00000000BFFE1591 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001)
[ 0.327525][ T0] ACPI: Reserving FACP table memory at [mem 0xbffe149d-0xbffe1510]
[ 0.328280][ T0] ACPI: Reserving DSDT table memory at [mem 0xbffe0040-0xbffe149c]
[ 0.328995][ T0] ACPI: Reserving FACS table memory at [mem 0xbffe0000-0xbffe003f]
[ 0.329723][ T0] ACPI: Reserving APIC table memory at [mem 0xbffe1511-0xbffe1590]
[ 0.330460][ T0] ACPI: Reserving HPET table memory at [mem 0xbffe1591-0xbffe15c8]
[ 0.331193][ T0] mapped APIC to ffffc000 ( fee00000)
[ 0.331814][ T0] No NUMA configuration found
[ 0.332270][ T0] Faking a node at [mem 0x0000000000000000-0x000000013fffffff]
[ 0.332950][ T0] NODE_DATA(0) allocated [mem 0x16e7a000-0x16e7bfff]
[ 0.333561][ T0] 4248MB HIGHMEM available.
[ 0.334003][ T0] 871MB LOWMEM available.
[ 0.334396][ T0] max_low_pfn = 367fe, highstart_pfn = 367fe
[ 0.334946][ T0] Low memory ends at vaddr f67fe000
[ 0.335433][ T0] High memory starts at vaddr f67fe000
[ 0.335938][ T0] mapped low ram: 0 - 367fe000
[ 0.336415][ T0] low ram: 0 - 367fe000
[ 0.336896][ T0] Zone ranges:
[ 0.337227][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.337816][ T0] Normal [mem 0x0000000001000000-0x00000000367fdfff]
[ 0.338425][ T0] HighMem [mem 0x00000000367fe000-0x000000013fffffff]
[ 0.339059][ T0] Movable zone start for each node
[ 0.339527][ T0] Early memory node ranges
[ 0.339933][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.340606][ T0] node 0: [mem 0x0000000000100000-0x00000000bffdffff]
[ 0.341280][ T0] node 0: [mem 0x0000000100000000-0x000000013fffffff]
[ 0.341949][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000013fffffff]
[ 0.343492][ T0] On node 0, zone DMA: 1 pages in unavailable ranges
[ 0.343597][ T0] On node 0, zone DMA: 97 pages in unavailable ranges
[ 0.384897][ T0] On node 0, zone HighMem: 32 pages in unavailable ranges
[ 0.385506][ T0] Using APIC driver default
[ 0.386700][ T0] ACPI: PM-Timer IO Port: 0x608
[ 0.387103][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.387717][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.388446][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.389080][ T0] Int: type 0, pol 0, trig 0, bus 00, IRQ 00, APIC ID 0, APIC INT 02
[ 0.389802][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.390472][ T0] Int: type 0, pol 1, trig 3, bus 00, IRQ 05, APIC ID 0, APIC INT 05
[ 0.391248][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.392045][ T0] Int: type 0, pol 1, trig 3, bus 00, IRQ 09, APIC ID 0, APIC INT 09
[ 0.392812][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.393562][ T0] Int: type 0, pol 1, trig 3, bus 00, IRQ 0a, APIC ID 0, APIC INT 0a
[ 0.394272][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.394998][ T0] Int: type 0, pol 1, trig 3, bus 00, IRQ 0b, APIC ID 0, APIC INT 0b
[ 0.395768][ T0] Int: type 0, pol 0, trig 0, bus 00, IRQ 01, APIC ID 0, APIC INT 01
[ 0.396566][ T0] Int: type 0, pol 0, trig 0, bus 00, IRQ 03, APIC ID 0, APIC INT 03
[ 0.397343][ T0] Int: type 0, pol 0, trig 0, bus 00, IRQ 04, APIC ID 0, APIC INT 04
[ 0.398137][ T0] Int: type 0, pol 0, trig 0, bus 00, IRQ 06, APIC ID 0, APIC INT 06
[ 0.398944][ T0] Int: type 0, pol 0, trig 0, bus 00, IRQ 07, APIC ID 0, APIC INT 07
[ 0.399762][ T0] Int: type 0, pol 0, trig 0, bus 00, IRQ 08, APIC ID 0, APIC INT 08
[ 0.400499][ T0] Int: type 0, pol 0, trig 0, bus 00, IRQ 0c, APIC ID 0, APIC INT 0c
[ 0.401179][ T0] Int: type 0, pol 0, trig 0, bus 00, IRQ 0d, APIC ID 0, APIC INT 0d
[ 0.401887][ T0] Int: type 0, pol 0, trig 0, bus 00, IRQ 0e, APIC ID 0, APIC INT 0e
To reproduce:
# build kernel
cd linux
cp config-5.17.0-rc3-00015-g118386b2ed0e .config
make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 INSTALL_MOD_PATH=<mod-install-dir> modules_install
cd <mod-install-dir>
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
---
0DAY/LKP+ Test Infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org Intel Corporation
Thanks,
Oliver Sang
View attachment "config-5.17.0-rc3-00015-g118386b2ed0e" of type "text/plain" (154031 bytes)
View attachment "job-script" of type "text/plain" (4694 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (13560 bytes)
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